zstd_compress_cctx(9)

📦 version 7.3.1, in nixpkgs unstable

💅 zstd_compress_cctx(9)

okay so this is a page from the Kernel API Manual — yes bestie, we're in kernel-land now, it's giving "big brain main character energy" and honestly? iconic 🎀

✨ NAME ✨

zstd_compress_cctx — compress src into dst with the initialized parameters 🫶

🌸 SYNOPSIS 🌸

size_t zstd_compress_cctx (zstd_cctx *cctx , void *dst , size_t
dst_capacity , const void *src , size_t src_size , const zstd_parameters
*parameters );

no cap, that's the whole signature, keep it exactly like that 💖

🦋 ARGUMENTS 🦋

  • cctx — the context, bestie. it must have been initialized with zstd_init_cctx — like, this is not optional, do not skip this step 🙈
  • dst — the buffer you're compressing src into. that's her home now 💅
  • dst_capacity — the size of the destination buffer. lowkey it may be any size, but ZSTD_compressBound(srcSize) is guaranteed to be large enough. so if you want the safe route, that's the vibe ⭐
  • src — the data to compress. the raw material, the moment, the muse ✨
  • src_size — the size of the data to compress. gotta know how much you're working with 📏
  • parameters — the compression parameters to be used. the settings, the lewk, the whole aesthetic 🎀

🔥 RETURN 🔥

it returns the compressed size 💖 — or an error 😭, which you can check using zstd_is_error. fr fr, always check, don't just assume it slayed.

👑 SEE ALSO 👑

kernel file ./include/linux/zstd.h plus the whole friend group:

that's the whole page, bestie — go compress something and slay 💜

source path: ./include/linux · dated October 2026 · manual: zstd_compress_cctx(9) — ok that's the cute sign-off, ily, bye 🧚‍♀️💖

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